Dr. Peter Callander, M.D.
Contact & Location
415-592-2014
San Francisco, CA 94118
Dr. Callander performs more hip replacement procedures than 93% of orthopedic surgeons in California, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #21 of 348 ranked hip surgeons in California.
About Dr. Callander
Practice. Dr. Peter Callander is a board-certified orthopedic surgeon practicing in San Francisco, California. The latest annual CMS data records 110 hip replacements and 67 knee replacements, 177 procedures in all. That is #21 in California for hip replacement. A Medicare provider since 2006.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume rose from 88 procedures a year to 177, up 101%.
National context. Among 4,542 hip replacement surgeons tracked nationally, 110 procedures is more than 3x the national average of 36. That is #109 nationally.
Local context. San Francisco has 23 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 47 | 41 |
| 2014 | 40 | 51 |
| 2015 | 44 | 40 |
| 2016 | 49 | 61 |
| 2017 | 44 | 63 |
| 2018 | 43 | 41 |
| 2019 | 53 | 53 |
| 2020 | 40 | 37 |
| 2021 | 58 | 44 |
| 2022 | 75 | 63 |
| 2023 | 78 | 62 |
| 2024 | 110 | 67 |
Verified Medicare Cases
How is this estimated?
Medicare Part B fee-for-service claims are one payer stream among several, and the share they represent differs by procedure. In 2024 it was 25% to 33% for hip replacement, 23% to 28% for knee replacement. Each verified count above is divided by its own procedure's range, and the results are added, to estimate total practice volume across all payers. The verified Medicare count is the definitive, audited figure; this is a range derived from published national volume projections, not a measurement, and an individual practice can sit well outside it: how these ranges are derived, and their sources.
How Dr. Callander Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Callander's Medicare-recorded procedure volume has trended upward over 12 years, increasing 101% from 88 procedures in 2013 to 177 in the most recent data.
Hospital Affiliations & Quality
Quality ratings and complication rates are hospital-level metrics from CMS Hospital Compare and do not reflect individual surgeon performance. Star ratings updated quarterly. Complication data covers a rolling 3-year period.
Patient Resources: Preparing for Hip Replacement
If you are considering hip replacement surgery, these evidence-based guides can help you prepare and recover:
Understanding the progression from conservative treatments to surgical intervention, and how to determine when hip replacement becomes the right choice.
Questions to Ask Your Surgeon Before Joint ReplacementA practical checklist of questions covering experience, technique, hospital choice, and recovery expectations to discuss during your surgical consultation.
Recovery Timeline: Week-by-Week ExpectationsA detailed week-by-week guide covering pain levels, mobility milestones, physical therapy progression, and when to expect a return to daily activities.
Outpatient Joint Replacement: A Medicare GuideHow outpatient joint replacement works under Medicare, including eligibility criteria, cost differences, and what to expect with same-day discharge.
Hip Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after hip replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full hip replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. Callander
How does Dr. Callander's procedure volume compare to other California surgeons?
Dr. Callander has performed 177 Medicare-verified joint replacement procedures. This is more than 2x the California average of 68 procedures per surgeon. Dr. Callander ranks #49 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Callander perform?
Dr. Callander's Medicare data shows procedures in hip replacement (110 cases) and knee replacement (67 cases).
Are there other orthopedic surgeons near Dr. Callander in San Francisco?
Yes. There are 23 orthopedic surgeons in San Francisco in the current Medicare dataset. Patients can compare procedure volumes and specializations to choose the surgeon who best fits their needs. Use the state page to view all California surgeons.
What does the Medicare data for Dr. Callander represent?
The procedure counts shown are based on 2024 Medicare Part B fee-for-service claims data, published by the Centers for Medicare and Medicaid Services (CMS). Medicare fee-for-service is only one payer stream, and the share of national volume it represents differs by procedure. In 2024 the share was 25% to 33% for hip replacement, 23% to 28% for knee replacement, which puts Dr. Callander's total volume across all insurers at roughly 570 to 730 procedures against the 177 verified here. Those shares are derived from published national volume projections rather than quoted from a single publication, and they are estimates with real uncertainty. The OrthoProcedures methodology page shows the full derivation, the sources, and the limits at orthoprocedures.com/data-methodology.html.
Has Dr. Callander's procedure volume changed over time?
Yes. Dr. Callander's Medicare-recorded volume has increased from 88 procedures in 2013 to 177 in the most recent data, a 101% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 177 procedures in 2024.
Does Dr. Callander perform more than one type of joint replacement?
Yes. Dr. Callander's Medicare data shows procedures in hip replacement (110 cases), knee replacement (67 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Callander affiliated with?
According to CMS facility affiliation data, Dr. Callander is affiliated with Novato Community Hospital, California Pacific Medical Center - Mission Bernal, California Pacific Medical Center- Van Ness Campus, California Pacific Medical Ctr-Davies Campus Hosp, Sonoma Valley Hospital.
How does Dr. Callander compare to other orthopedic surgeons in San Francisco?
Among the 23 orthopedic surgeons in San Francisco, Dr. Callander ranks #3 by total Medicare procedure volume. Dr. Callander is among the highest-volume surgeons in San Francisco.
What are the quality ratings for hospitals where Dr. Callander practices?
Novato Community Hospital (5 out of 5 CMS stars, hip/knee complication rate similar to national average); California Pacific Medical Center - Mission Bernal (4 out of 5 CMS stars, hip/knee complication rate similar to national average); California Pacific Medical Center- Van Ness Campus (3 out of 5 CMS stars). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in San Francisco, California
Dr. Callander's 177 Medicare procedures are above the San Francisco average of 137. The table below compares verified procedure volumes for orthopedic surgeons practicing in San Francisco.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Jeffrey Barry | 201 | Hip, Knee |
| Dr. Derek Ward | 190 | Hip, Knee |
| Dr. Erik Hansen | 133 | Hip, Knee |
| Dr. Christopher Cox | 95 | Hip, Knee |
| Dr. John Belzer | 88 | Knee, Shoulder |
| Dr. Heather Roberts | 74 | Hip, Knee |
Patient Resources & Verification
Research reviews, verify credentials, and check official quality data through these trusted sources:
Medicare Care Compare and NPI Registry are official U.S. government sources. Google reviews reflect user-submitted feedback. OrthoProcedures.com does not verify the accuracy of third-party review content.